Term introduced by Van Doesburg in 1930 'Manifesto of Concrete Art' published in the first and only issue of magazine Art Concret. He called for a type of abstract art that would be entirely free of any basis in observed reality and that would have no symbolic implications. He stated that there was nothing more concrete or more real than a line, a colour, or a plane (a flat area of colour). The Swiss artist Max Bill later became the flag bearer for Concrete art organising the first international exhibition in Basle in 1944. He stated that the aim of Concrete art is to create 'in a visible and tangible form things which did not previously exist—to represent abstract thoughts in a sensuous and tangible form'. In practice Concrete art is very close to Constructivism and there is a museum of Constructive and Concrete art in Zurich, Switzerland.